What characteristic of read-only memory (ROM) makes it useful? [Syndicate Bank Clerk 2010, Punjab & Sind 2010]

• A.  ROM information can be easily updated
• B.           Data in ROM is nonvolatile, that is, it remains there even without electrical power
• C.           ROM provides very large amounts of inexpensive data storage
• D.           ROM chips are easily swapped between different brands of computers
• E.           None of these